#### Average

#### Associative Property of Multiplication

When three real numbers are multiplied, it makes no difference which two are multiplied first.

#### Associative Property of Addition

When three real numbers are added, it makes no difference which two are added first.

#### Algebraic inequality

An inequality that contains one or more variable terms.

#### Additive Inverse Property

The sum of a real number and its opposite is zero.

#### Additive Inverse

Two numbers whose sum is zero.

#### Additive Identity Property

The sum of zero and a real number equals the number itself.

#### Addition Property of Inequalities

Add the same quantity to each side.

#### Add two integers with like signs

Add their absolute values and attach the common sign to the result.

#### Abundant number

A number where the sum of its proper factors is greater than the number.

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